Back in 1967 there were pretty primitive darkroom facilities
tucked away in the basement of an old building with terrible ventilation,
so dust particles on the negatives was always a big problem! You can clearly see some dust particles on the original print:

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Years
later when photograph became all digital, I converted the image from
analog to digital taking a relatively pristine copy of an original print and scanning it into a digital .jpg file at 1200 DPI. I then used GIMPto
retouch the photograph to remove all those dust spots that kept
getting on the negative in that old darkroom. The resulting
photograph then looked like the following:

Since the original use for the photograph was for the cover of the
college's FineArts magazine,
I then dabbled with the photograph to make it more artsy by again
using GIMP to
add some color to an original monochrome Black & White photograph
resulting in the following image:

So,
this is the final result of retouching a photograph that was had taken
in 1967 in the analog age and then using digital procedure to
enhance the image to what it could of possibly appeared as all those years
ago if I was a more accomplished photographer back then!

Finally using my image manipulation program I also made a 3D anaglyph photograph from that original, you can see the 3D effect by wearing anaglyph glasses (using Red & Cyan lens). Viewing the photograph in the 3D mode really gives the viewer a feeling of how remote the wooded areas of the campus were back in 1967. Students could really find solitude for personal thoughts back then just by going for walks in the secluded areas of the campus.

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To see exactly how to produce a 3D Anaglyph photograph using the GIMP program, download the following tutorial and read and learn how to produce photographs with this eye catching effect: